I just got an HW3 calc at Wal-Mart... and how long is the return policy? Oh and is there anything new about the HW4 besides the fact that it is a lot faster?

As far as we know, there is nothing new with the HW4, except faster.

Don't use Wal-Mart. They're ruining the economy.

And if the extra speed is that important, you can always overclock your calculator. I wonder if a 33pF capacitor would set HW2/3's clock speed to something similar to HW4?

Though instructions on that site are for regular 89. Does anybody know if there are similar instructions for Titanium?

To finish everything up, does the new H4 run at the speed of 13 mhz, or 16 mhz?!

I ran CPUSpeed on my HW3/OS3.01 TI-89 Titanium, and it said the speed was 12.94 Mhz. Thats only a .36 Mhz difference between HW3, and RainbowMonkeys HW4.

I have looked but have never seen any for the titanium, and am to scared to try it on my titanium. It works for my regular HW2 89 though.

I did a cpuspeed test on my HW4 and it runs at 13.28 Mhz

I emailed TI asking about the speed, and memory of the HW 4 ti-89. This is the email they sent me.

Dear Chris,

Thank you for contacting Texas Instruments. We appreciate your interest
in and support of Texas Instruments technology and products.

You inquired regarding new hardware for the TI-89 Titanium. There is not
new hardware for that model graphing calculator. I believe what you have
been hearing about is a new product which will be announced next month.
This product is already available in Germany. It has not yet been made
available in the States and will not be available here until this Fall.

Here is a link to our German page which you can easily translate if you
wish: <see link>

Perhaps the people who answer e-mails have not all been informed of everything that goes on in the company. If all they changed was the speed (or perhaps if they changed something they do not want known), they might not have informed everyone.

That's a support person not having been informed of what's going on in engineering. Sad, but frequent. The larger the company, the more likely this is to happen.

What's next HW5?

I don't think that it ever will because TI will be focusing on the TI-Nspire CAS

What are you using to measure its speed of 13 mhz?

Maybe you could test else how. :o (benchmarks??)

I ran CPUSpeed on my HW3/OS3.01 TI-89 Titanium, and it said the speed was 12.94 Mhz. Thats only a .36 Mhz difference between HW3, and RainbowMonkeys HW4. I thought HW4 was supposed to run at 16 Mhz?

Also the fastest M68K is see were an at my friend with 128Mhz.I dont know how he do it but he have some very cool hard- and softwaretools with them he do it.